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Significant effects of the perceived weight of the container on both the perceived intensity of the fragrance and on the expected efficacy of the soap were also documented.
The objective of the study was to evaluate perceived weight gain in women using contraception and determine the validity of self-reported weight gain.
The participants evaluated the perceived intensity of the fragrance contained in each bottle, the perceived weight of each bottle, and the expected efficacy of the soap itself (that is, the soap's expected "cleaning ability").
A related paper, published about a week later in Preventing Chronic Disease, also compared actual and perceived weight in a nationally representative cohort of children and adolescents.
In psychophysics, the Weber Fechner law proposes a logarithmic relationship between stimulus and sensation such as the actual vs. the perceived weight of an item a person is carrying.
All that changed across lifts was what the participant saw before they lifted, meaning that any changes in perceived weight and/or fingertip forces from one lift to the next must have been due to participants' expectations.
Finally, the measure of perceived weight status was rather crude.
In this cross sectional survey, we observed marked discordance between the actual and perceived weight.
Agreements of perceived weight status (κ = 0.68; percent agreement = 79.9%) was good.
The population sample was subdivided into groups based on measured and perceived weight status.
Among boys, the order of the distributions slightly differs between perceived weight and BMI category.
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CEO of Professional Science Editing for Scientists @ prosciediting.com